Sumner shaw



Patented Jan. 10, I899.

LUCK.

A ncation' filed May 18', 1898.)

(No Model.)

IKE Nqams PETERS ca. morc-Lm-lon'wnsumdfou. ac.

NlTED STATES PATENT FFlCE.

SUMNER SHAXV, OF BOSTON, MASSACHUSETTS.

LOCK.

SPECIFICATION forming part of Letters Patent No. 617,361, dated January 10, 1899.

Application filed May 18, 1898. Serial No. 681 ,015. (No model.)

To all whom it may concern.-

Be it known that I, SUMNER SHAW, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Locks, of which the following is a speci iication.

This invention relates to improvements on the patent for looks granted to me Februarytical section on the line 3 3, also shown in Fig.

1. Fig. 4: represents a side elevation of one of the tumblers. Fig. 5 represents a side elevation of one of the stationary partitions between the tumblers, and Fig. 6 represents a side View of the key.

Similar letters refer to similar parts Whereever they occur on the different parts of the drawings.

a is the case with its detachable cover a, as usual.

e represents the bolt, which is guided in its rear end by having the stationary pin a projectin g through a slotted perforation e in said bolt, as is common in looks of this kind.

Within the upper portion of the case a are secured a number of stationary plates or partitions f f f preferably by means of fasteningscrews f f, and between such partitions f are arranged the tumblers h h, which are loosely pivoted on a pin 9, so as to swing thereon when raised by the key in a manner like that shown and described in my above-mentioned patent.

72. represents a spring secured to the rear end of each tumbler and to the case a, as shown in Fig. 1, for the purpose of returning the tumblers to their normal positions after the bolt 6 is fully opened or closed.

To the bolt e is firmly secured the upwardlyprojecting yoke 70, having upper and lower locking-ribs 76' and it for the tumblers h h, the latter having corresponding locking-recesses 7L and h", like those shown and described in my patent above referred to. On the under side of each tumbler 71., back of the recess h", is made another recess h, which serves to hold the bolt e in an unlocked position by interlocking with the lower lockingrib on the yoke k in a manner as fully shown and described in my aforesaid patent.

f 3 is an elongated notch on the under side of each partition-plate f for the purpose of allowing the yoke kand its lower locking-rib k to be moved forward and back withoutinterfering with the said plates ff.

Each tumbler It has on its under side a curved recess h (shown in Fig. 4 and in dotted lines in Fig. 1,) each such recess being difierent from the others in the series and corresponding in depth to the different teeth Z on the key Z, said key having recesses Z l between said teeth to enable the key to be turned without interfering with the stationary partitions in a manner as fully described in my aforesaid patent.

m is the tumbler-cylinder, having its ends journaled in bearings in the case a and cover a, as shown in Figs. 1 and '2.

m is a longitudinal slit through the tumbler-cylinder m for receiving the body of the key Z, and art/m are cylindrical perforations through said tumbler-cylinder, which form a continuation of the slit m such cylindrical perforations serving to receive the cylindrical back portion Z of the key Z, as shown in Figs. 1 and 6.

Intermediate between the tumbler-cylinder m and the bolt e is located a lever cl, which is pivoted on a stationary pin d, as shown. The upper end of the lever d is slotted or forked, as shown at d in Fig. 1, and through said slotted or forked portion is inserted a pin m, attached to the tumbler-cylinder m, as shown. The lower end of the lever 01 is provided with a curved slot 01 adapted to receive a pin e, secured to the bolt 6, as shown in Figs. 1 and 2.

In the drawings the bolt 6 is shown in a locked position. To unlock the bolt, it is only necessary to insert the key Z in the slit m in the tumbler-cylinder m with its back Z inserted in the cylindrical recess m" in said tumbler-cylinder. If now the key and tumbler-cylinder are turned in the direction of the arrow shown in Fig. 1, it causes first the tumblers h 7:, to be raised out of engagement with the lower rib 7; on the yoke 70, and at the same time causes the lever (Z to be turned around its fulcrum without imparting motion to the bolt 6 by reason of the curved slot 01 on said lever (1. During the subsequent continuous motion of the tumbler-cylinder the lever 61 causes the end of the slot (Pin the lever d to actuate the pin e, attached to the bolt 6, by which the latter is moved inward in the direction of the arrow shown on said bolt in Fig. 1, thus causing said bolt to be unlocked.

To look the bolt, I prefer to insert the back Z of the key in the cylindrical recess m in the tumbler-cylinderm and the bodyl of the key in the slit m If now the key and tumbler-cylinder are turned in an opposite direction to that shown by the arrow in Fig. 1, the tumblers h h are first raised out of engagement with the lower rib is" of the yoke Z0, and at the same time the lever d is caused to be rocked without imparting motion to the bolt 6 by reason of the curved slot d in said lever. During the subsequent continuous motion of the tumbler-cylinder the lever (1 causes the end of the slot (Z in the lever cl to actuate the pin 6, attached to the bolt 6, by which the latter is moved outward in a direction opposite to that shown by the arrow in Fig. 1, thus causing said bolt to be locked. The notches 7t 011 the tumblers h are held interlocked with the rib is" on the yoke 70 when the bolt 6 is locked, and the notches h on said tumblers are likewise held interlocked with said rib 71; on the yoke 76 when the bolt 8 is unlocked, so as to prevent the opening and closing of the bolt except by the turning of the tumbler-cylinder m by means of a spe' cially-constructed key in a manner as fully shown and described in my above-mentioned patent.

Having thus fully described the nature, construction, and operation of my invention, I wish to secure by Letters Patent and claim 1. In a tumbler-lock the movable notched tumblers h, h and intermediate stationary, recessed division-plates f, f, combined with the bolt 6 having a yoke 70 adapted to interlock with said tumblers, a rotary key-receiving tumbler-cylinder and a lever d pivoted intermediate between the tumbler-cylinder and bolt and pivotally connected to said parts, substantially as and for the purpose set forth.

2. In a tumbler-lock, in combination, a series of yielding pivoted notched tumblers, a series of intermediate stationary divisionplates, a key-receiving tumbler-cylinder, a locking-bolt having a yoke adapted to interlock with the notched tumblers and a lever pivoted intermediate between the tumblercylinder and locking-bolt and having its ends pivotally connected to said bolt and tumblercylinder, substantially as and for the purpose set forth.

3. In a tumbler-lock, a series of pivoted tumblers and intermediate stationary division-plates,oombined with a locking-bolt having means for interlocking it with the tumblers, a key-receiving tumbler-cylinder and a lever pivoted intermediate between said tumbler-cylinder and bolt, and having slotted or forked portions at its ends and means for connecting the ends of said lever to the tumbler-cylinder and bolt, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

SUMNER SIIAIV.

lVitnesses:

ALBAN ANDREN, KARL A. ANDRI'IN. 

